snippet xxl "向量"
\vec { $1 } $0
endsnippet

snippet dxl "向量"
\overrightarrow {$1} $0
endsnippet

snippet xl "向量" i
\symbfit 
endsnippet

snippet	xla "向量组aa" iA
\symbfit \alpha
endsnippet

snippet	xlb "向量组bb" iA
\symbfit \beta
endsnippet


snippet yls "列向量" i
\begin{array}{c}
$1 \\\\ $2 \\\\ $3 \\\\ $4 \\\\ $0
\end{array}
endsnippet

snippet	xlza "向量组aa" i
\symbfit \alpha_1,\symbfit \alpha_2,\cdots,\symbfit \alpha_s
endsnippet

snippet	xlzb "向量组bb" i
\symbfit \beta_1,\symbfit \beta_2,\cdots,\symbfit \beta_s
endsnippet

snippet ks "数列k" 
k_1,k_2,\cdots,k_s
endsnippet

snippet kas "ka和" i
k_1\symbfit \alpha_1+k_2 \symbfit\alpha_2+\cdots+k_s\symbfit\alpha_s 
endsnippet
